WordNet (r) 3.0 (2006):

Eris
    n 1: (Greek mythology) goddess of discord; sister of Ares

The Jargon File (version 4.4.7, 29 Dec 2003):

Eris
 /e'ris/, n.

    The Greek goddess of Chaos, Discord, Confusion, and Things You Know Not Of;
    her name was latinized to Discordia and she was worshiped by that name in
    Rome. Not a very friendly deity in the Classical original, she was
    reinvented as a more benign personification of creative anarchy starting in
    1959 by the adherents of Discordianism and has since been a semi-serious
    subject of veneration in several ?fringe? cultures, including hackerdom.
    See Discordianism, Church of the SubGenius.


The Free On-line Dictionary of Computing (30 December 2018):

Eris

   /e'ris/ The Greek goddess of Chaos, Discord, Confusion, and
   Things You Know Not Of; her name was latinised to Discordia
   and she was worshiped by that name in Rome.  Not a very
   friendly deity in the Classical original, she was reinvented
   as a more benign personification of creative anarchy starting
   in 1959 by the adherents of Discordianism and has since been
   a semi-serious subject of veneration in several "fringe"
   cultures, including hackerdom.

   See Church of the SubGenius.

   [Jargon File]

   (1994-12-08)